ixgbe(4) and "Could not setup receive structures"

[Nikolay Denev]

On Apr 14, 2011, at 2:05 PM, Leon Meßner wrote:

> Hi,
> 
> i tried setting the mtu on one of my ixgbe(4) intel NICs to support
> jumbo frames. This is on a box with RELENG_8 from today.
> 
> # ifconfig ix0 mtu 9198
> 
> I then get the following error: 
> 
> # tail -n 1 /var/log/messages
> Apr 14 12:48:43 siloneu kernel: ix0: Could not setup receive structures
> 
> I already tried the following patch because of Jack Vogel's advice given
> in the following thread on -stable in Oct. last year, which still
> produces the same error message and leaves the box unpingable:
> 
> http://lists.freebsd.org/pipermail/freebsd-stable/2010-October/059541.html
> 
> # cat ~/patches/ixgbe.num_queues_to_4.patch 
> --- /root/.vimbackup/ixgbe.c~   2011-04-12 22:14:27.000000000 +0000
> +++ sys/dev/ixgbe/ixgbe.c       2011-04-12 22:14:27.000000000 +0000
> @@ -273,7 +273,7 @@ TUNABLE_INT("hw.ixgbe.hdr_split", &ixgbe
>  * number of cpus. Each queue is a pair
>    * of RX and TX rings with a msix vector
>      */
>      -static int ixgbe_num_queues = 0;
>      +static int ixgbe_num_queues = 4;
>       TUNABLE_INT("hw.ixgbe.num_queues", &ixgbe_num_queues);
> 
> 	 /*
> 
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Hi,

Have you tried increasing the following sysctls ? :

    kern.ipc.nmbjumbo16
    kern.ipc.nmbjumbo9
    kern.ipc.nmbclusters

Regards,
Nikolay